Stats Test 2 Review, Scatterplots

Flashcard
•
Mathematics
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a scatterplot?
Back
A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.
2.
FLASHCARD QUESTION
Front
What does the slope of a linear regression line represent?
Back
The slope indicates the rate of change of the dependent variable (y) for each unit change in the independent variable (x).
3.
FLASHCARD QUESTION
Front
What does an r value of -0.75 indicate about the relationship between two variables?
Back
It indicates a strong negative correlation, meaning as one variable increases, the other tends to decrease.
4.
FLASHCARD QUESTION
Front
What does an r value of -0.98 indicate?
Back
It indicates a very strong negative correlation between the two variables.
5.
FLASHCARD QUESTION
Front
What does an r value of 0.15 indicate?
Back
It indicates a weak positive correlation between the two variables.
6.
FLASHCARD QUESTION
Front
How do you interpret a scatterplot with a negative slope?
Back
It indicates that as one variable increases, the other variable tends to decrease.
7.
FLASHCARD QUESTION
Front
What is the equation of a linear regression line?
Back
The equation is typically in the form y = mx + b, where m is the slope and b is the y-intercept.
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